Results of a new Des Moines Register Iowa Poll on the race for the Republican presidential nomination will be released this weekend.

Highlights of the poll will be released at 7 p.m. Saturday at DesMoinesRegister.com. In-depth analysis of the results will be published in the Des Moines Sunday Register.

This is the second Iowa Poll of the 2012 caucus cycle. In the first poll of likely Republican caucusgoers, published in late June, former Massachusetts Gov. Mitt Romney edged U.S. Rep. Michele Bachmann of Minnesota to lead the field. Since then, former Gov. Tim Pawlenty of Minnesota has left the race, and Texas Gov. Rick Perry has joined it.

The Iowa Poll is a Register exclusive since 1943. Selzer & Co. of Des Moines conducts the Iowa Poll for the Register.